package Demo01;

public class Demo03Integer {
    public static void main(String[] args) {
        String s1 = 100 + "";
        System.out.println(s1 + 100);//100100

        String s2 = Integer.toString(100);
        System.out.println(s2 + 100);//100100

        String s3 = String.valueOf(100);
        System.out.println(s3 + 100);//100100

        int i = Integer.parseInt("100");
        System.out.println(i +100);//200
    }
}
